Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taisei Corp
Nikon Corp
Original Assignee
Taisei Corp
Nikon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taisei Corp, Nikon CorpfiledCriticalTaisei Corp
Priority to JP1988069334UpriorityCriticalpatent/JPH089606Y2/ja
Publication of JPH01173606UpublicationCriticalpatent/JPH01173606U/ja
Application grantedgrantedCritical
Publication of JPH089606Y2publicationCriticalpatent/JPH089606Y2/ja